Armor Lock isn't overpowered. You just suck at Reach :)
Reach isn't bad, you're just a BK :)
For my gamertag, look up "Ghoulishtie"
It is about the battle that took place on the UNSC planet, Reach BEFORE the events of Halo 1.
And before you start to read around and ask, no, Reach is NOT the planet at the legendary ending of halo 3. (just putting that out incase)